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Geography

Grade 4

Resources and services within a settlement

Module 14

Water in our houses

Water as a resource

Without water life on earth is not possible. Water is also the ingredient or substance found in the largest quantities on earth – it covers almost 80 % of the surface of our planet. Only 3 % of the 80 % is fresh water, and most of this fresh water is found in frozen form, namely the ice-fields at the North and South Poles.

Some interesting facts:

  • Between 60% and 70% of our bodies consist of water.
  • 85% of our brains is water.
  • 25% of our bone structures is water.
  • 83% of our blood is water.
  • A human being can survive for longer than two weeks without food, but only three days without water.
  • A human being loses an average of 2,5 litres of water due to perspiration, respiration and waste.

1.water in our houses

Now that you have been introduced to these interesting facts about human beings and water, are you convinced that water is the most important resource? Discuss it in class.

Activity 1

To discuss water in and around our homes [lo 2.2]

What does your family need water for? Talk to your partner about your needs, and then answer the following questions:

Water for our family

  1. We all drink water.

2. Mother uses water when she cooks food.

3. …………………………………………………………………………………

4. …………………………………………………………………………………

5. …………………………………………………………………………………

6. …………………………………………………………………………………

7. …………………………………………………………………………………

8. …………………………………………………………………………………

2.where does your water come from?

When it rains, water flows along rivers and streams to eventually end up in great dams that were built in the rivers. They are called storage dams. From these storage dams the water is transported in enormous pipes to water works where the necessary purification of the water takes place. From there the water is transported along smaller pipes to cities and towns and eventually to our homes. Which storage dam(s) is/are nearest to you? Write down the name(s) of the dam(s):

Access to water

Activity 2

To identify the reasons why some people have better access to clean water than others [lo 3.2]

  • Our government spends large amounts of money to supply clean water to all the people of our country for drinking household use. The ideal is that each household should have running water that is clean and safe in their homes.
  • However, there are still many people that have to walk long distances to fetch water in containers and carry them home. Often the water is taken from rivers that are polluted by people, animals and factories. The polluted water causes diseases from which people can die.

Informal settlements are established and develop so rapidly that the local governments cannot supply running water immediately. The people build their shelters close to open water sources such as rivers. Everybody then uses the same source. People not only take their drinking water from the source, but also wash themselves and their washing in the same water. Children play and swim in the water, and animals contaminate the water. Often waste from factories is dumped into the source.

Assessment

Learning outcome 2: geographical knowledge and understanding

The learner will be able to demonstrate geographical and environmental knowledge and understanding.

Assessment standard

We know this when the learner:

  • describes the importance of access to resources and services for people living in settlements.

Learning outcome 3: exploring issues

The learner will be able to make informed decisions about social and environmental issues and problems.

Assessment standard

We know this when the learner:

3.2 identifies the factors that influence why some people have better access to resources compared to others in a particular context.

Memorandum

Water in and around our homes

  1. Purification (cleansing purposes)
  2. Garden

5. Swimming pool

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
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Source:  OpenStax, Geography grade 4. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11084/1.1
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